JDK6笔记（2）----操作XML文件

最新推荐文章于 2021-02-25 14:31:03 发布

最新推荐文章于 2021-02-25 14:31:03 发布 · 60 阅读

文章标签：

#java #开发工具

本文介绍使用JDK6中的StAX API解析特定格式的XML文件。通过一个具体示例，展示如何读取XML文件并解析其结构及属性。代码详细展示了如何处理开始文档、开始元素、字符内容、结束元素和结束文档等事件。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

JDK6笔记（2）----操作XML文件

一、XML文件如下：
文件名为：de_pjxmb.xml

<?xml version="1.0" encoding="gb2312"?>
<object title="价格明细表项" name="tbjgmx" pname="TBJGMX" log_table="system.LOG.0002" ts_column="lts">
<property title="ID" name="id" pname="ID" type="int"/>
<property title="时戳" name="lts" pname="LTS" type="int"/>
<property title="工作单ID" name="gzdid" pname="GZDID" type="int"/>
<property title="填报单位" name="tbdw" pname="TBDW" type="int" cc="2"/>
<property title="产品ID" name="cpid" pname="CPID" type="int"/>
<property title="价格类型" name="jglx" pname="JGLX" type="int" cc="3"/>
<property title="结算方式" name="jsfs" pname="JSFS" type="int" cc="17"/>
<property title="包装类型" name="bzlx" pname="BZLX" type="int" cc="6"/>
<property title="市场区域" name="scqy" pname="SCQY" type="int" cc="2" cl="1"/>
<property title="生效标志" name="sxbz" pname="SXBZ" type="int"/>
<property title="生效日期" name="sxrq" pname="SXRQ" type="date"/>
<property title="结束日期" name="jsrq" pname="JSRQ" type="date"/>
<property title="外键" name="fk" pname="FK" type="string" length="40"/>
<property title="外键新" name="fkn" pname="FKN" type="sting" length="40"/>
</object>

二、Java源文件如下：
package myfile;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.XMLStreamConstants;

import java.io.FileNotFoundException;
import java.io.FileReader;
public class XmlTest1 {
public static void main(String[] args) throws XMLStreamException, FileNotFoundException{
String path="D:/eclipse/Workspace/Test/src/myfile/de_pjxmb.xml";
FileReader file=new FileReader(path);
XMLInputFactory factory=XMLInputFactory.newInstance();
XMLStreamReader r=factory.createXMLStreamReader(file);
try{
int event=r.getEventType();
while(true){
switch(event){
case XMLStreamConstants.START_DOCUMENT: System.out.println("Start Document.");
break;
case XMLStreamConstants.START_ELEMENT: System.out.println("Start Element:"+r.getName());
for(int i=0,n=r.getAttributeCount();i<n;++i)
System.out.println("Attribute: "+r.getAttributeName(i));
break;
case XMLStreamConstants.CHARACTERS:
if(r.isWhiteSpace())
break;
System.out.println("Text: "+r.getText());
break;
case XMLStreamConstants.END_ELEMENT: System.out.println("End Element:"+r.getName());
break;
case XMLStreamConstants.END_DOCUMENT: System.out.println("End Document.");
break;
}
if(!r.hasNext())
break;
event=r.next();
}
}
finally{
r.close();
}
}
}

三、输出结果如下：

Start Document.
Start Element:object
Attribute: title
Attribute: name
Attribute: pname
Attribute: log_table
Attribute: ts_column
Start Element:property
Attribute: title
Attribute: name
Attribute: pname
Attribute: type
End Element:property
Start Element:property
Attribute: title
Attribute: name
Attribute: pname
Attribute: type
End Element:property
Start Element:property
Attribute: title
Attribute: name
Attribute: pname
Attribute: type
End Element:property
Start Element:property
Attribute: title
Attribute: name
Attribute: pname
Attribute: type
Attribute: cc
End Element:property
Start Element:property
Attribute: title
Attribute: name
Attribute: pname
Attribute: type
End Element:property
Start Element:property
Attribute: title
Attribute: name
Attribute: pname
Attribute: type
Attribute: cc
End Element:property
Start Element:property
Attribute: title
Attribute: name
Attribute: pname
Attribute: type
Attribute: cc
End Element:property
Start Element:property
Attribute: title
Attribute: name
Attribute: pname
Attribute: type
Attribute: cc
End Element:property
Start Element:property
Attribute: title
Attribute: name
Attribute: pname
Attribute: type
Attribute: cc
Attribute: cl
End Element:property
Start Element:property
Attribute: title
Attribute: name
Attribute: pname
Attribute: type
End Element:property
Start Element:property
Attribute: title
Attribute: name
Attribute: pname
Attribute: type
End Element:property
Start Element:property
Attribute: title
Attribute: name
Attribute: pname
Attribute: type
End Element:property
Start Element:property
Attribute: title
Attribute: name
Attribute: pname
Attribute: type
Attribute: length
End Element:property
Start Element:property
Attribute: title
Attribute: name
Attribute: pname
Attribute: type
Attribute: length
End Element:property
End Element:object
End Document.